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Jeremy MacGregor

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About Jeremy MacGregor

  • Birthday 10/04/1987

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  • Location
    Tracy CA
  • Gender
    Male

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  1. Hi Jeremy,Hope you are well. I've been flying a lot.. up to 580 hrs.

    are you still doing 600hr gearbox inspection/rebuild? I know you are rated, but are you equipped ?

    Thank, Bill

  2. I get what your saying thou Roger, you want to make sure that a certain Item will make it to the next Inspection, not necessarily the next annual. Obviously if it's an aircraft used for a flight school there going to know how many hours are being put on it a year. Not to mention if they are flying over a 100hrs a year then they should be doing 100hr inspections. If I find any serious issues during an annual inspection I notify the customer, give him a quote on fixing it, at which time if he chooses not to have it fixed I make a note in his logbook and release the plane back to him. The annual may or may not be signed off, if he chooses to fly the aircraft with a known defect that is 100% his responsibility. The FAA only requires mechanics to inspect an aircraft during an annual. You can sign off an annual with defects found but you better make damn sure you list the discrepencys (have the owner sign the list) and clearly state the aircraft is NOT in safe condition for flight and not returned to service.
  3. I would like to back up Roger on this by saying that it pays to shop around and find a competent mechanic because most of the differences in bills people have been getting have been due to labor. I will be the first to admit there are a lot of "Grey" areas when it comes to this matter. I just want everyone to keep in mind that legally... Rotax can not specify a maintenance interval on a part they do not sell, for example oil lines, Rotax used to sell oil lines by the meter and you used to get a length of it with a crate engine but that has since changed 8+ years ago before Light Sport came into the picture. Therefore the only person who can specify when to change them out is FD. Thankfully FD has been pretty good at backing up Rotax and togeather, pretty much anything that is rubber is recommended to be replaced by one or both of them. Same goes for fuel lines if any of you were wondering. Wing root hoses, aft of firewall hoses, all these are 100% FD supplied and 100% out of Rotax's control. Personally, safety has always been a high priority for Roger and I. Sadly I have found over the years that giving the mechanic the right to run something "on condition" has led to a lot of accidents because a mechanic may be worried about giving the customer too big of a bill and losing his business the fallowing years even thou he would of felt better about changing a hose that was showing surface cracks that may or may not of made it to the fallowing years annual. Being a mechanic I appreciate the "back up" we get from our mfgs. As for the engine mounts there are 3 things that cause them to wear ( Sweating of the rubber over time, heat inside the cowl which can speed up the sweating, and vibration) Personally I think rubber mounts should be replaced every 5 yrs, I will change that statement If someone can show me a picture of one plane that has 5 yrs on it with more than 100hrs flown over that 5 yrs that doesn't have at least one isolator cracked. I have done a number of these updates now and do yourself a favor and pull the damn engine. Roger and I aren't the smallest guys but I now damn well that we both agree thats its "quicker and easier" to pull the engine. 1.5 hrs off, 2.5hrs on, maybe quicker if you have help. One more comment on moving the needle clip. According to Rotax the needle should never be changed from its standard position, they set the engines up for 1000 MSL and they think you should keep it that way. Moving the clip dose help fuel burn and does effect EGTs but that is besides the point, there is no technical data to back up the change in positions, if you want to change them Im not going to lose any sleep of it, just keep in mind its not "recommended" The Heavy M/M specifys where the clip should be, but gives no mention of changing it in any SB, SL, or SI... unless I missed something.
  4. In most cases turning on the carb heat allows warmer less dense air into the cylinders. If there was a normal mixture control like traditional aircraft engines then this decrease in air pressure will lead to a richer mixture which depending on your phase of flight and throttle setting would normally lead to lower rpm readings. In the case of the Bing carbs your mixture is attempting to compensate for and pressure changes but there is also in inevitable lag with this. In the case of our carbs, when we apply carb heat, the initial inrush of warm air leads to higher internal cylinder temps which increases power temporarily but this rpm increase should again drop after the mixture has stabilized.
  5. Hi Jeremy, I'm Doug in IL. We chatted the other week and it was enjoyable. Say, are you familiar with DOVA aircraft, believe, Skyview Aviation, Tracy, CA may be US Dealer/Distributor. What if any opinion do you have of this aircraft and maintenance support. I was thinking aluminum is a little more convienent to repair than composite. But I don't know if the DOVA have unique parts pro...

  6. JM Aero Service & Repair Location: Byron Airport C83 / Northern California Qualifications: A&P, Sport Pilot, Rotax iRMT- (Overhaul Rated) Mainteance Rated Airport: 4000' Paved Runnway Field Elevation 75Ft MSL Uncontrolled Airspace Contact Info: Jm_aeroservice@yahoo.com (209)481-5881Cell Services: JM Aero Service was founded to not only help Rotax owners in there area with there normal maintenance issues but to also provide the necessary resources for the not so normal ones. We have many years of experience in dealing with the Rotax 912 Series engines and the CTSW & CTLS line of aircraft. Please give us a call if there is anything we may assist you with! List of services: General Maintenance 100hr/ Condition Inspections Pre-buy inspections 5yr rubber replacement updates BRS removal & installation Warranty fullfillment Top end overhaul specialist (5yrs experience in Rotax overhaul facility) Gearbox overhaul specialist (over 100 logged rebuilds) Please call for a quote, guarranteed customer satisfaction!
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